This is a continuation of a community-based participatory research program focusing on pesticide contamination in migrant farmworker communities. Oregon Health Sciences University's Center for Research on Occupational and Environmental Toxicology and the Oregon Child Development Coalition propose to extend the participatory research model that has been developed to increase community capacity and to build knowledge on the nature and extent of childhood exposures to pesticides and resulting health effects. The project includes involvement from representatives of academic institutions, child and family educational, health, and social services, and the agricultural community. We propose to extend our program of research beyond the state of Oregon to accomplish the following specific aims: